Journal
JOURNAL OF CLINICAL PERIODONTOLOGY
Volume 36, Issue 10, Pages 857-867Publisher
WILEY
DOI: 10.1111/j.1600-051X.2009.01471.x
Keywords
biofilm; chlorhexidine; dental plaque; periodontal disease; subgingival microbiota; supragingival plaque control
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Funding
- State of Sao Paulo Research Foundation (FAPESP) [03/13612-1]
- National Institutes of Health (NIH, USA) [5 R03 TW006269-02]
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P>Aim To compare the clinical and microbiological effects of scaling and root planing (SRP) alone or combined with mechanical [professional plaque control (PPC)] or chemical [chlorhexidine rinsing (CHX)] control of supragingival plaque in the treatment of chronic periodontitis. Material and Methods Sixty subjects were randomly assigned to receive SRP alone or combined with PPC (twice a week) or with CHX rinsing (twice a day). The adjunctive treatments began with SRP and were continued for 42 days. Clinical and microbiological examinations were performed at baseline, 2 and 6 months post-therapy. Subgingival plaque samples were analysed for 38 bacterial species by checkerboard DNA-DNA hybridization. Results The two test treatments were more effective in improving probing depth and clinical attachment level (CAL) than SRP alone, even in intermediate and deep sites. CAL gain was better maintained in the CHX group. The most beneficial microbiological changes were observed in CHX-treated subjects, who showed a significant reduction in the proportions of red and orange complexes, as well as an increase in the proportions of the host-compatible bacterial species. Conclusion Strict plaque control performed during and after SRP improves periodontal treatment outcomes. The greatest microbiological and clinical benefits were observed with the use of CHX rinsing.
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